Theodosian dynasty

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Roman imperial dynasties
Theodosian dynasty
Chronology
Theodosius I as Emperor of the East 379–392
Theodosius I as sole emperor 392–395
-with Arcadius as junior Augustus of the East 383–395
Honorius as Emperor of the West 395–423
Arcadius as Emperor of the East 395–408
Theodosius II as Emperor of the East 408–450
Marcian as Emperor of the East 450–457
Succession
Preceded by
Valentinian dynasty
Followed by
Leonid dynasty


The Theodosian dynasty was a Roman family that rose to eminence in the waning days of the Roman Empire.

History[edit]

Its founding father was Flavius Theodosius (often referred to as Count Theodosius), a great general who had saved Britannia from the Great Conspiracy. His son, Flavius Theodosius was made emperor of the Eastern Roman Empire in 379, and briefly reunited the Roman Empire 394–395 by defeating the usurper Eugenius. Theodosius I was succeeded by his sons Honorius in the West and Arcadius in the East. The House of Theodosius was related to the Valentinian Dynasty by marriage, since Theodosius I had married Galla, a daughter of Valentinian I. Their daughter was Galla Placidia. The last emperor in the West belonging to the dynasty was Galla Placidia's son Valentinian III. The last emperor of the dynasty in the East was Theodosius II, the son of Arcadius. Later, both in the East and in the West, the dynasty briefly continued, but only through marriages: Marcian became emperor by marrying Pulcheria, the older sister of Theodosius II, after the death of the latter, Petronius Maximus was married to Licinia Eudoxia, the daughter of Theodosius II, and Olybrius was married to Placidia, the daughter of Valentinian III. Anthemius is also sometimes counted to the dynasty as he became a son-in-law of Marcian. Descendants of the dynasty continued to be part of the East Roman nobility at Constantinople until the end of the 6th century.

Members[edit]

Stemmata[edit]

In italics the Augusti and the Augustae.

  • Sextus Iulius Caesar (Ancestor)
  • Marcus Actius
  • Iulius Honorius married Flavia Actia / Iulius Theodosius / Iulius Eucherius


Family tree[edit]

 
 
 
 
 
 
 
 
 
 
 
 
Flavius Julius Honorius
∞ Flavia Actia
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Flavius Julius Theodosius
comes
∞ Flavia Thermantia
 
Valentinian I
emperor of the West
364-375
Justina
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.Aelia Flacilla
 
Theodosius I
emperor of the Romans
379-392
 
2.Galla
VALENTINIAN DYNASTY
 
 
 
 
 
Stilicho
magister militum
Serena
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1) Pulcheria
 
(1) Arcadius
emperor of the East
395-408
Aelia Eudoxia
 
Maria
 
(1) Honorius
emperor of the West
393-423
 
Thermantia
 
 
 
 
 
(2) Galla Placidia
∞ 1.Athaulf of Visigoths
2.Constantius III
emperor of the West
421
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arcadia
 
1. (wife)
 
Marcian
emperor of the East
450-457
 
2.Pulcheria
 
 
 
 
 
 
 
 
 
 
 
 
 
Theodosius II
emperor of the East
408-450
Aelia Eudocia saint
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1) Marcia Euphemia
 
Anthemius
emperor of the West
467-472
 
 
 
 
 
Leo I the Thracian
emperor of the East
457-474
Verina
 
Petronius Maximus
emperor of the West
455
∞ 1.(wife)
2.Licinia Eudoxia
 
Licinia Eudoxia
∞ 1.Valentinian III
2.Petronius Maximus
 
Valentinian III
emperor of the West
425-455
 
(2) Justa Grata Honoria
∞ Flavius Bassus Herculanus
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Anthemiolus
general
 
Procopius Anthemius
politician
 
Romulus
general
 
Alypia
Ricimer
magister militum
 
Marcian
usurper
 
Leontia
LEONID DYNASTY
 
(1) Palladius
caesar
 
Eudocia
∞ 1.Palladius
caesar
2.Huneric of Vandals
 
Placidia
Olybrius
emperor of the West
472
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Hilderic of Vandals
 
Anicia Juliana
Areobindus
 
sibling
 
Anastasius I Dicorus
emperor of the Romans
491-518
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Olybrius
consul 491
 
Irene
 

See also[edit]